Back in the 1970s, dietitians were telling their patients that the amount of vitamin D needed for good health was 400 IU. There has been an explosion of research on the topic of vitamin D deficiency, prevention and treatment. Now we know that telling someone that 400 IU vitamin D is all that is needed is totally wrong. In fact, this type of advice now would contribute to the creation of all types of diseases, including diabetes, cancer, rickets, infections, and mental disorders.
The more that health experts delved into the topic of vitamin D deficiency, the more shocked they became when discovering that it was an emerging global health problem. U.S. citizens had deficiencies. The U.K, European countries, Russia and South America had clearly defined deficiencies. Australian people were deficient. Those in the Middle East and Orient were deficient. No pocket of land on earth was found that housed people who were not deficient.
So doctors, nutritionists and researchers got busy. There was a lot to do. They had to determine how much vitamin D to give to those who were deficient, how long of a period of time supplementation was needed, whether or not there were toxic levels, and how much was needed for maintenance. Over the last 5 years, levels have been established.
If your vitamin D levels indicate a deficiency, you will either be given a shot of 50,000 IU weekly for 8 to 12 weeks or take 50,000 IU to 60,000 IU weekly for 12 weeks to overcome the deficiency.
Sunshine is the best way to obtain vitamin D since your body regulates how much you need and stops producing it when you have reached adequate levels. Unfortunately, it is nearly impossible to obtain all of your vitamin D from the sun year-round if you live in a temperate climate. The sunshine varies, depending on the latitude of where you live and the season of the year. That means that in winter, your levels will fall, unless you are taking supplements.
Health experts are still debating about what level of vitamin D should be taken to maintain good levels already achieved. Their suggestions range from 1000 to 6000 IU per day for adults.
NOTE: There are a few very rare contradictions to taking vitamin D. Those with high blood calcium levels should not take vitamin D. Conditions causing high blood calcium can be caused by:
- primary hyperparathyroidism (most common cause)
- granulomatous TB
- some cancers
Please consult your physician prior to taking Vitamin D.